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A photothermal composite material with functions of light absorption, heat generation and heat storage and preparation method thereof

A technology of light absorption and heating, composite materials, applied in heat exchange materials, chemical instruments and methods, other chemical processes, etc., can solve the problems of low solar energy utilization efficiency, low heat storage efficiency, large heat loss, etc., and achieve good light absorption and heating effect. , High heat storage density, the effect of reducing loss

Active Publication Date: 2021-07-27
上海驰纺材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a photothermal composite material with light-absorbing, heat-generating and heat-storing functions and a preparation method thereof. It also solves the problem of large heat loss and low heat storage efficiency in the heat transfer process existing in photothermal heat storage composite materials in the prior art.

Method used

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  • A photothermal composite material with functions of light absorption, heat generation and heat storage and preparation method thereof
  • A photothermal composite material with functions of light absorption, heat generation and heat storage and preparation method thereof
  • A photothermal composite material with functions of light absorption, heat generation and heat storage and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] The nano-light-absorbing heat-generating material and the organic phase-change material selected in this example are nano-zirconium carbide and n-dodecanol respectively, and the preparation steps are as follows:

[0042] (1) Preparation of nano zirconium carbide dispersion

[0043] Dissolve 1.00 g of polyvinylpyrrolidone in 99.00 g of deionized water, adjust the pH value of the system to about 9.0 with 0.1 mol / L sodium hydroxide, and obtain an aqueous solution of polyvinylpyrrolidone with a mass concentration of 1%. Take 5.26g of nanometer zirconium carbide and add it into the above solution, stir it magnetically for 30 minutes and then ultrasonically treat it for 50 minutes, so as to obtain a dispersion of nanometer zirconium carbide with a mass concentration of 5%.

[0044] (2) Preparation of photothermal heat storage emulsion

[0045] 10.00 g of n-dodecanol and 2.00 g of isophorone diisocyanate were mixed respectively, and stirred evenly in a water bath at 40° C. to...

Embodiment 2

[0049] The nano-light-absorbing heat-generating material and the organic phase-change material selected in this example are nano-silicon carbide and n-hexadecane, respectively, and the preparation steps are as follows:

[0050] (1) Preparation of nano-silicon carbide dispersion

[0051] Dissolve 1.00 g of polyvinylpyrrolidone in 99.00 g of deionized water, adjust the pH value of the system to about 9.0 with 0.1 mol / L sodium hydroxide, and obtain an aqueous solution of polyvinylpyrrolidone with a mass concentration of 1%. Take 5.26g of nano-silicon carbide and add it to the above solution, stir it magnetically for 30 minutes and then ultrasonically treat it for 70 minutes, so as to obtain a nano-silicon carbide dispersion with a mass concentration of 5%.

[0052] (2) Preparation of photothermal heat storage emulsion

[0053] 10.00 g of n-hexadecane and 2.00 g of isophorone diisocyanate were mixed respectively, and stirred evenly in a water bath at 40° C. to obtain an oil phase...

Embodiment 3

[0057] The nano-light-absorbing heat-generating material and the organic phase-change material selected in this example are nano-zirconium carbide and n-octadecane respectively, and the preparation steps are as follows:

[0058] (1) Preparation of nano zirconium carbide dispersion

[0059] Dissolve 1.00 g of polyvinylpyrrolidone in 94.00 g of deionized water, adjust the pH value of the system to about 9.0 with 0.1 mol / L sodium hydroxide, and obtain an aqueous solution of polyvinylpyrrolidone with a mass concentration of 1.05%. 5.00 g of nano zirconium carbide was added to the above solution, magnetically stirred for 30 min and then ultrasonically treated for 60 min to obtain a nano zirconium carbide dispersion with a mass concentration of 5%.

[0060] (2) Preparation of photothermal heat storage emulsion

[0061] 14.00 g of n-octadecane and 2.00 g of isophorone diisocyanate were mixed respectively, and stirred evenly in a water bath at 40° C. to obtain an oil phase. The sodi...

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Abstract

The invention relates to a photothermal composite material with both light absorbing and exothermic heat storage functions and a preparation method thereof. The invention directly loads the light absorbing and heating material in the heat storage material, and the heat energy generated by the photothermal conversion can be directly stored in the heat storage material, which can significantly improve the utilization efficiency of solar heat energy and reduce the heat loss during the transfer process. It has the advantages of good light absorption and heating effect, high heat storage density and good stability, and has important application value in the fields of energy-saving buildings and winter thermal insulation clothing.

Description

technical field [0001] The invention belongs to the field of photothermal composite materials, and in particular relates to a photothermal composite material with functions of light absorption, heat generation and heat storage and a preparation method thereof. Background technique [0002] Solar energy is an inexhaustible clean and environmentally friendly renewable energy source. It is an important way to utilize solar energy by converting the energy of solar radiation into thermal energy. The energy of solar radiation is mainly concentrated in the bands of visible light, infrared light and ultraviolet light, of which the energy radiated in the visible light band accounts for about 49% of the total energy of solar radiation, and the energy radiated in the near-infrared band accounts for about 46% (Wu Zhongbiao et al. , Applied Catalysis B: Environmental, 2017, 204:584-592). Photothermal material is a photothermal conversion material that can efficiently absorb solar energy...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K5/06C09K3/00
CPCC09K3/00C09K5/063
Inventor 王先锋杜博超靳晓松杨兴友朱建梅
Owner 上海驰纺材料科技有限公司
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